The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_LossContingencyLossInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	0 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jul. 31, 2013	Jul. 31, 2013	Nov. 14, 2007 Braun Hummel lawsuit	Oct. 13, 2006 Braun Hummel lawsuit	Jul. 31, 2013 Inquiry and investigation expense	Jul. 31, 2013 Inquiry and investigation expense	Jul. 31, 2013 Compliance Programs and Organizational Enhancements [Member]	Jul. 31, 2013 Compliance Programs and Organizational Enhancements [Member]
Loss Contingencies [Line Items]
Loss contingency, loss in period				$ 78
Litigation settlement, gross			188
Rate of post-judgment interest accrual			6.00%
Foreign Corrupt Practices Act related expenses	$ 82	$ 155			$ 48	$ 92	$ 34	$ 63